Here's what rhymes with propionic.
bionic ionic tonic sonic conic phonic daemonic chronic ironic chorionic demonic iconic avionic embryonic tectonic colonic mnemonic laconic platonic diatonic subsonic electronic harmonic sardonic supersonic diachronic histrionic hypertonic isotonic planktonic polyphonic symphonic catatonic telephonic acetonic hegemonic ultrasonic ganglionic monotonic synchronic hydroponic monophonic stereophonic architectonic infrasonic philharmonic quadraphonic quadrophonic pathognomonic microelectronic Words that almost rhyme with propionic
comic genomic atomic autonomic diatomic tragicomic economic anatomic ergonomic subatomic taxonomic agronomic astronomic uneconomic gastronomic socioeconomic macroeconomic microeconomic logic topic folic gothic idiotic tropic biotic boric iambic hayrick rollick cosmic periodic toxic aortic chaotic erotic garlic caustic geologic pyloric atopic formic frolic gnostic karmic meiotic meteoric myopic robotic bardic cirrhotic rhapsodic seraphic strophic carsick placekick patriotic aquatic exotic hydraulic neurotic biologic caloric despotic episodic hypnotic melodic psychotic etiologic phenolic semiotic symbiotic anarchic anoxic basaltic cathodic dialogic euphoric fibrotic inotropic prosodic bucolic diabolic folkloric vitriolic ecologic heartsick subtopic theosophic chopstick shopaholic historic symbolic alcoholic metabolic antibiotic apostolic hydrochloric diastolic isotropic narcotic neurologic pathologic prognostic systolic ascorbic carbolic hyperbolic isotopic metaphoric necrotic parabolic spasmodic synoptic yardstick agnostic cathartic lethargic oligarchic orthodontic pedagogic polymorphic psychotropic sclerotic telescopic thrombotic demagogic hierarchic acrostic gyroscopic stroboscopic allegoric macrobiotic subtropic aetiologic shambolic chocoholic chocaholic horologic diagnostic philosophic physiologic prehistoric catastrophic cytotoxic histologic endoscopic metamorphic morphologic psychologic melancholic nontoxic peristaltic quixotic antarctic arthroscopic homoerotic unpatriotic xenophobic subarctic workaholic posthypnotic sophomoric astronautic microscopic macroscopic philanthropic anisotropic immunologic hematologic stereoscopic bacteriologic fluoroscopic kaleidoscopic meteorologic nonnarcotic haematologic noncaloric gynaecologic seismologic anthropomorphic atherosclerotic epidemiologic pharmacologic spectroscopic gynecologic microcosmic antispasmodic misanthropic nonalcoholic electroscopic submicroscopic